Build(deps-dev): Bump rector/rector from 0.15.13 to 0.15.16 (#2318)

Bumps [rector/rector](https://github.com/rectorphp/rector) from 0.15.13 to 0.15.16.
- [Release notes](https://github.com/rectorphp/rector/releases)
- [Commits](rectorphp/rector@0.15.13...0.15.16)

---
updated-dependencies:
- dependency-name: rector/rector
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>